<template>
  <a-layout>
    <a-layout-content
        :style="{
        background: '#fff',
        padding: '24px',
        margin: 0,
        minHeight: '280px',
      }"
    >
      <p>
        <a-form
            layout="inline"
            :model="param"
        >
          <a-form-item>
            <a-input v-model:value="param.name" placeholder="名称" />
          </a-form-item>
          <a-form-item>
            <a-button type="primary" @click="handleQuery({page: 1, pageSize: pagination.pageSize})">
              查询
            </a-button>
          </a-form-item>
          <a-form-item>
            <a-button type="primary" @click="add">
              新增
            </a-button>
          </a-form-item>
        </a-form>
      </p>
      <a-table
          :columns="columns"
          :row-key="(record) => record.id"
          :data-source="ebooks"
          :pagination="pagination"
          :loading="loading"
          @change="handleTableChange"
      >
        <template #cover="{ text }">
          <img v-if="text" :src="text" alt="avatar" />
        </template>
        <template #category="{ record }">
          <span>{{ getCategoryName(record.category1Id) }} / {{ getCategoryName(record.category2Id) }}</span>
        </template>
        <template #action="{ record }">
          <a-space size="small">
            <router-link :to="'/admin/doc?ebookId=' + record.id">
              <a-button type="primary">
                文档管理
              </a-button>
            </router-link>
            <a-button type="primary" @click="edit(record)"> 编辑 </a-button>
            <a-popconfirm
                title="删除后不可恢复，确认删除?"
                ok-text="是"
                cancel-text="否"
                @confirm="handleDelete(record.id)"
            >
              <a-button type="primary" danger> 删除 </a-button>
            </a-popconfirm>
          </a-space>
        </template>
      </a-table>
    </a-layout-content>
  </a-layout>

  <a-modal
      title="电子书表单"
      v-model:visible="modalVisible"
      :confirm-loading="modalLoading"
      @ok="handleModalOk"
  >
    <a-form :model="ebook" :label-col="{ span: 6 }" :wrapper-col="{ span: 18 }">
      <a-form-item label="封面">
        <a-input v-model:value="ebook.cover" />
      </a-form-item>
      <a-form-item label="名称">
        <a-input v-model:value="ebook.name" />
      </a-form-item>
      <a-form-item label="分类">
        <a-cascader
            v-model:value="categoryIds"
            :field-names="{ label: 'name', value: 'id', children: 'children'}"
            :options="level1"
        />
      </a-form-item>
      <a-form-item label="描述">
        <a-input v-model:value="ebook.description" type="textarea" />
      </a-form-item>
    </a-form>
  </a-modal>
</template>

<script lang="ts">
import { defineComponent, onMounted, ref } from "vue";
import axios from "axios";
import { message } from "ant-design-vue";
import { Tool } from '../../util/tool';

export default defineComponent({
  name: "AdminEbook",
  setup() {
    const param = ref()
    param.value = {}
    const ebooks = ref()
    const pagination = ref({
      current: 1,
      pageSize: 4,
      total: 0,
    })
    const loading = ref(false)

    const columns = [
      {
        title: "封面",
        dataIndex: "cover",
        slots: { customRender: "cover" },
      },
      {
        title: "名称",
        dataIndex: "name",
      },
      {
        title: "分类",
        dataIndex: "category",
        slots: { customRender: "category" },
      },

      {
        title: "文档数",
        dataIndex: "docCount",
      },
      {
        title: "阅读数",
        dataIndex: "viewCount",
      },
      {
        title: "点赞数",
        dataIndex: "voteCount",
      },
      {
        title: "Action",
        dataIndex: "action",
        slots: { customRender: "action" },
      },
    ];

    /**
     * 数据查询
     */
    const handleQuery = (params: any) => {
      loading.value = true;
      // 注意：axios.get 有两种方式传参，一：路由拼接 二：参数 { params:  } 这个 key 必须为 params
      axios
          .get("/ebook/list", {
            params: {
              page: params.page,
              pageSize: params.pageSize,
              name: param.value.name
            },
          })
          .then((res) => {
            loading.value = false;
            const data = res.data;
            if (data.success) {
              ebooks.value = data.content.list;

              // 重置分页按钮
              pagination.value.current = params.page;
              pagination.value.total = data.content.total;
            } else {
              message.error(data.message);
            }
          });
    };

    /**
     * 表格点击页码时触发
     */
    const handleTableChange = (pagination: any) => {
      console.log("分页参数：" + pagination);
      handleQuery({
        page: pagination.current,
        pageSize: pagination.pageSize,
      });
    };

    /**
     * 表单
     * 数组 [100, 101]对应：前端开发 / Vue
     */
    const categoryIds = ref();
    const ebook = ref();
    const modalVisible = ref(false);
    const modalLoading = ref(false);
    const handleModalOk = () => {
      modalLoading.value = true;
      ebook.value.category1Id = categoryIds.value[0];
      ebook.value.category2Id = categoryIds.value[1];
      axios.post("/ebook/save", ebook.value).then((res) => {
        modalLoading.value = false;
        const data = res.data;
        if (data.success) {
          modalVisible.value = false;

          // 重新加载列表
          handleQuery({
            page: pagination.value.current,
            pageSize: pagination.value.pageSize,
          });
        } else {
          message.error(data.message);
        }
      });
    };

    /**
     * 编辑
     */
    const edit = (record: any) => {
      modalVisible.value = true;
      ebook.value = Tool.copy(record);
      categoryIds.value = [ebook.value.category1Id, ebook.value.category2Id];
    };

    /**
     * 新增
     */
    const add = () => {
      modalVisible.value = true;
      ebook.value = {};
    };

    /**
     * 删除
     */
    const handleDelete = (id: number) => {
      axios.delete("/ebook/delete/" + id).then((res) => {
        const data = res.data;
        if (data.success) {
          // 重新加载列表
          handleQuery({
            page: pagination.value.current,
            pageSize: pagination.value.pageSize,
          });
        }
      });
    };
    const level1 = ref()
    let categorys: any

    /**
     * 查询所有分类
     */
    const handleQueryCategory = () => {
      loading.value = true;
      // 注意：axios.get 有两种方式传参，一：路由拼接 二：参数 { params:  } 这个 key 必须为 params
      axios.get("/category/all").then((res) => {
        loading.value = false;
        const data = res.data;
        if (data.success) {
          categorys = data.content;
          console.log("原始数组：", categorys);

          level1.value = [];
          level1.value = Tool.array2Tree(categorys, 0);
          console.log("树形结构：", level1.value);
          //先加载分类，再加载电子书，否则因网络延迟而报错
          handleQuery({
            page: 1,
            pageSize: pagination.value.pageSize,
          });
        } else {
          message.error(data.message);
        }
      });
    };
    const getCategoryName = (cid: number) => {
      let result = ''
      categorys.some((item:any) => {
        if (item.id === cid) {
          result = item.name
          return true
        }
      })
      return result
    }


    onMounted(() => {
      handleQueryCategory()

    });

    return {
      ebooks,
      pagination,
      columns,
      loading,
      handleTableChange,
      param,

      edit,
      add,
      handleDelete,
      handleQuery,

      modalVisible,
      modalLoading,
      handleModalOk,
      ebook,
      categoryIds,
      level1,
      getCategoryName

    };
  },
});
</script>

<style scoped>
img {
  width: 50px;
  height: 50px;
}
</style>
